Valve Rocker Arm Bolt 19 N·m + 30° (14 lb ft+ 30°)
A GM dealer shows me another source, which says 32 Nm (24 lb-ft). Not sure which one is right but they screwed up my car.
My car had a leaking head gasket and it was replaced under warranty in 2006. There was a special tool to avoid removing the rocker arm bolts but the mechanic didn't use it. Since then the bolts stripped out of the cylinder heads a few times. I paid $180 for the dealership to try helicoil but the bolts still came loose again in 2011. GM shipped two new cylinder heads to fix my car. I guess the two specs are basically the same but removing the bolts is not recommended.My car had a leaking head gasket and it was replaced under warranty in 2006. There was a special tool to avoid removing the rocker arm bolts but the mechanic didn't use it. Since then the bolts stripped out of the cylinder heads a few times. I paid $180 for the dealership to try helicoil but the bolts still came loose again in 2011. GM shipped two new cylinder heads to fix my car. I guess the two specs are basically the same but removing the bolts is not recommended.
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I presume that you are connecting your Intake manifold to the cylinder head after replacing your intake gasket, if so they are 30ft lbs, and 360 in pounds. Hope that helps
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The 2000 Chevy Impala 3.4 liter engine rocker arm bolt torque specification is 45 pounds. The rocker arm bolts should be torqued in 15 pound intervals.
Here is a suggested updated torque spec for this engine's rocker arm bolts;
Rocker arms
Step one: Torque to 11 ft lbs then tighten an additional 90 degrees of bolt head rotation. Some guys don't fuss with the torque specs and just get them good and tight. Either way, be careful, as the heads are aluminum. You do not want to over tighten these bolts
Same vehicle. I had the #2 rocker arm bolt stripped out. Sounds like the same thing. Not to hard of a fix.... just take time. Or about 300-400 for a mechanic to fix.
The torque for the exhaust manifold bolts is 12 ft. lbs. The rocker arms are to be torqued to 14 ft. lbs. first then turned an additional 30 degrees. Sounds kind of odd but that's how they tighten the rocker bolts properly.
99 chevy malibu v6 3.1 engine, head bolt torque is-- 98 through 2001 is step1- 37 foot lbs, step 2- rotate an additional 90 degrees (1/4 turn). the rocker arm bolts are 168-in. lbs.
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